WO2006041707A2 - Ensemble pompe servant a acheminer un liquide de refroidissement - Google Patents

Ensemble pompe servant a acheminer un liquide de refroidissement Download PDF

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Publication number
WO2006041707A2
WO2006041707A2 PCT/US2005/035013 US2005035013W WO2006041707A2 WO 2006041707 A2 WO2006041707 A2 WO 2006041707A2 US 2005035013 W US2005035013 W US 2005035013W WO 2006041707 A2 WO2006041707 A2 WO 2006041707A2
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder body
valve
shaft
piston
pump
Prior art date
Application number
PCT/US2005/035013
Other languages
English (en)
Other versions
WO2006041707A3 (fr
Inventor
Daniel W. King
Steven Gregory Redelman
Original Assignee
Urschel Laboratories Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Urschel Laboratories Inc. filed Critical Urschel Laboratories Inc.
Priority to PL05802471T priority Critical patent/PL1797321T3/pl
Priority to EP05802471.2A priority patent/EP1797321B1/fr
Priority to ES05802471.2T priority patent/ES2546082T3/es
Publication of WO2006041707A2 publication Critical patent/WO2006041707A2/fr
Publication of WO2006041707A3 publication Critical patent/WO2006041707A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N13/00—Lubricating-pumps
    • F16N13/02—Lubricating-pumps with reciprocating piston
    • F16N13/06—Actuation of lubricating-pumps
    • F16N13/10—Actuation of lubricating-pumps with mechanical drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0436—Pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0493—Gearings with spur or bevel gears
    • F16H57/0495—Gearings with spur or bevel gears with fixed gear ratio

Definitions

  • Food cutting machines often include mechanical components that operate at high temperatures and are sealed from exposure to food products.
  • a drive assembly for a food cutting machine such as in Model CC-D manufactured by Urschel Laboratories, Valparaiso IN, has been found to have a drive assembly that fails due to repeated use. It has been determined that the major culprit of the failure is bearing assembly failure.
  • bearing assembly failure has been an accepted operating condition.
  • Different types of grease, seals and combinations thereof, and preloading of bearing assemblies have been employed to remedy the failure of the bearing assemblies. While grease is used to lubricate bearing assemblies in known drive assembly designs, there is no means to maintain lubrication of the bearing assemblies once a drive assembly is assembled.
  • the cutting machine must be made of a simplified design to enable easy clean-up and maintenance. It follows that the food cutting machines must be sufficiently versatile while maintaining a high degree of operating precision. Due to the relatively high volume of cutting operations that these food cutting machines are intended to perform, down time of the machines due to mechanical failure is highly undesirable. Therefore, mitigating bearing assembly failure is a high concern for operators of these cutting machines.
  • Embodiments of the present invention are directed to a pump assembly for use in an impeller drive assembly for supplying cooling fluid to at least one bearing assembly used to support and stabilize an impeller shaft.
  • the pump assembly is particularly useful in a food cutting machine of the type described above.
  • the pump assembly includes a cam member securable to an impeller shaft and arranged to rotate about the impeller shaft axis, a piston pump including a cylinder body with a biased piston drivingly displaceable within the cylinder body and engages with the cam such that rotation of the cam corresponds to reciprocating movement of the piston within the cylinder body, a first valve connected to the piston pump and operable to permit the pumping of fluid into the cylinder body , and a second valve connected to the piston pump and operable to permit the pumping of fluid out from the cylinder body .
  • Suitable passageways are provided to connect the first and second valves to the piston pump.
  • conduits are provided which connect the first valve to a fluid reservoir, and the second valve to a bearing assembly or other mechanical components requiring cooling.
  • the first and second check valves are ball valves.
  • the cylinder body and bodies corresponding to the check valves may be formed in a single body construction wherein the bodies and connecting passageways are formed in the single body.
  • a drive assembly having an impeller shaft mounted for rotation about a first axis of rotation, a drive shaft mounted for being driven about a second axis of rotation, a gear arrangement coupling the drive and impeller shafts, and at least one bearing arrangement engaging the impeller shaft.
  • the drive assembly includes an embodiment of the pump assembly wherein the cam member is secured for rotation with the impeller shaft to operate the pump assembly.
  • a reservoir of lubricating fluid may be provided wherein the pump assembly communicates with the reservoir to extract lubricating fluid therefrom and transporting the same to at least one bearing assembly.
  • Fig. 1 is an elevational cross-sectional view showing an impeller drive assembly having an embodiment of a pump assembly according to the invention
  • Fig. 2 is a schematic plan view showing portions of the pump assembly of Fig. 1 ;
  • Fig. 3 is a schematic elevational view showing portions of the pump assembly of Fig. 1.
  • FIG. 1 Various embodiments of the pump assembly according to the invention are provided for use in an impeller drive assembly of a precision food cutting machine.
  • An example of a food cutting machine is the Model CC-D produced by Urschel Laboratories Incorporated of Valparaiso, IN.
  • the impeller drive assembly may be configured to operate with a variety of different cutting heads or impellers, and moreover, the impeller drive assembly may be adapted for other applications outside of those for rotating an impeller wherein rotary motion via a shaft is required.
  • inventive pump assembly is not to be restricted for use solely in food cutting machines, but it may be adapted for use in a variety of machinery wherein a cam may be mounted on a shaft for rotation therewith and operable to displace a piston pump so as to transport fluid to a predetermined location.
  • the inventive pump assembly may be used to cool a variety of mechanical components and it is not limited to cooling a bearing assembly as described herein.
  • Fig. 1 illustrates an impeller drive assembly 10 of a food cutting machine.
  • a gear case 12 and an impeller bearing housing 14 are provided for surrounding an impeller shaft 16 and the components associated therewith.
  • the impeller shaft 16 is mounted for rotation within the impeller bearing housing 14.
  • the gear case 12 defines a reservoir 13 suitable for retaining a body of lubrication oil.
  • a drive shaft 18 surrounded by a horizontal bearing housing 20 couples with the impeller shaft 16 via a first spiral bevel gear 22 mounted on a first end of the impeller shaft 16 and a second spiral bevel gear 24 mounted on a first end of the drive shaft 18.
  • Suitable bearing devices are provided to support and balance the impeller shaft 16 and the drive shaft 18.
  • the impeller bearing housing 14 includes at least first and second roller bearings 26, 27 generally arranged along the drive shaft 18.
  • the first roller bearing 26 is positioned generally at a middle length of the impeller shaft 16, and the second roller bearing 27 is generally positioned at the second end of the impeller shaft 16.
  • a suitable bearing device 29 is provided for the drive shaft 18.
  • Additional bearing devices may be used along the length of the impeller or drive shafts in order to provide additional support and stability to these shafts. While the bearing devices are shown in Fig. 1 as comprising conventional roller bearings, other bearings devices may be used in conjunction with the impeller and the drive shaft, such as multiple roller bearings or thrust bearings.
  • a lockwasher/locknut 28 is provided near or at the first end of the impeller shaft 16.
  • a primary seal arrangement 30 is provided at the second end of the impeller shaft 16 at a location beyond the second roller bearing 27.
  • a lockwasher/locknut 31 is provided along the drive shaft 18.
  • the lockwasher/locknut 28 is used to fasten the spiral bevel gear 22 to the impeller shaft 16.
  • the lockwasher/locknut 31 is used to preload the roller bearing 29 without respect to mounting center distances of the spiral bevel gears 22, 24.
  • the locknut/lockwasher 69 is used along with a cam member 34 to preload the impeller bearings 26, 27.
  • Another seal arrangement 70 is located at the far end of the drive shaft 18 (opposite the gear end).
  • the seal arrangements 30, 70 are used to prevent oil loss and the introduction of contaminants.
  • seal arrangements may be provided at various locations of the impeller shaft and drive shaft to prevent loss of lubrication oil and the introduction of contaminants into the impeller drive assembly.
  • the seals may be of the type that are resistant to lubrication oil and prevent the passage of oil between the seal and mechanical components.
  • the pump assembly 32 is shown as including a cam member 34 which is eccentrically mounted to the impeller shaft 16 for rotation about a rotational axis of the impeller shaft 16.
  • a piston pump 36 is provided to cooperate with the rotation of the cam member 34, and first and second check valves 46, 60 are in communication with the piston pump 36 for removing fluid from the reservoir 13 and discharging the removed fluid to the second roller bearing 27.
  • the piston pump 36 includes a reciprocating piston 38 that protrudes from a cylinder body 40 of the piston pump 36.
  • the piston 38 is arranged so that a first end 43 is biased against a piston spring 42 provided in the cylinder body 40 and a second end 45 is pressed against the outer circumferential face 47 of the rotating cam member 34.
  • Fig. 3 illustrates an embodiment of the pump assembly with the piston pump 36 connected to the first and second valves 46, 60.
  • a first passageway 44 is provided to connect the piston pump 36 to the first valve 46.
  • the first valve 46 is a ball valve having a valve body 50 with a ball bearing 48 retained by a spring 52 within the valve body 50. At an end opposite of the first passageway 44, the first valve 46 has a receiving portion 54 that connects to a first fluid conduit 56 which extends from the first valve 46 to permit fluid extraction from the reservoir 13.
  • a second passageway 58 is provided which connects the piston pump 36 to the second valve 60. Similar to the first valve 46, the embodiment of the second valve 60 is depicted in Fig. 3 as a ball valve having a valve body 64 and a ball bearing 62 retained by a spring 66 within the valve body 64. A second fluid conduit 68 connects to the valve body 64 and extends, as shown in Fig. 1, to the second ball bearing 27.
  • ball bearing check valves Operation of ball bearing check valves is well understood to those skilled in the art and a general description of their operation is therefore not provided in this disclosure.
  • the pump assembly is not limited to ball check valves as described herein, and other suitable check valves may be used such as flapper or disk valves types.
  • the pump assembly 32 is preferably shown in Fig. 3 as having the cylinder body 40, valve bodies 50, 64 and passageways 44, 58 formed in an assembly body 49.
  • This assembly body 49 may comprise a single-body construction, numerous components which are connected to one another, or halves which are secured together by welding or fasteners.
  • a single-body construction is particularly advantageous in that it can easily be replaced as a single should the pump assembly fail to operate or become contaminated.
  • the pump assembly may be arranged without the assembly body wherein the constituents of the pump assembly such as the piston pump, check valves and passageways are connected to one another and separately mounted within the gear case of the impeller drive assembly.
  • the cam member 34 urges the piston 38 into the cylinder body 40 on the basis of the rotation of the cam member 34 with the impeller shaft 16.
  • the valve element 48 of the first valve 46 moves due to a pressure difference between inside the cylinder body 40 and inside the reservoir 13 to open the first valve 46 and to allow the fluid to flow through both the first conduit 56 and first passageway 44 into the cylinder body 40.
  • the second valve 60 is closed at this instance since the ball bearing 62 is drawn to seal the inlet of the second passageway 58.
  • valve element 62 of the second valve 60 moves due to the pressure difference inside the cylinder body 40 and inside the second valve body 64 to eject the fluid in the cylinder body 40 through the second passageway 58 and second valve 60 and through the second conduit 68 towards the second ball bearing 27.
  • the fluid stored in the reservoir and circulated by the pump assembly is preferably oil.
  • An advantage to the pump assembly is that oil can be used which serves as a better lubricating media than grease to lubricate the bearings used in the impeller drive assembly.
  • the oil used in the pump assembly may be continually re-circulated to decrease operation temperature of the bearings supporting the impeller shaft.
  • the oil used to cool the bearings may also be used to cool the gears and the need for a seal at the first end of the impeller shaft is thereby removed which in turn results in a reduction of factional loss and subsequent wear on the shaft due to the reduction in seals.
  • the pump assembly is shown as discharging fluid at the second bearing, the pump assembly may be configured to discharge fluid from the reservoir at any one of the bearings disposed along the impeller shaft.
  • the pump assembly is not limited to the two check valves discussed and shown herein, and the pump assembly may include a variety of check valves and different combinations thereof as deemed necessary for operation of the pump assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Reciprocating Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

L'invention concerne un ensemble pompe (32) comprenant: un élément à cames (34) arrangé de façon à tourner autour d'un axe, et une pompe à piston (36) présentant un corps de cylindre (40) muni d'un piston incliné (38) mobile qui se déplace par entraînement à l'intérieur du corps de cylindre (40) et entre en prise avec l'élément à cames (34) de sorte que la rotation de l'élément à cames (34) corresponde au mouvement alterné du piston (38). L'ensemble pompe (32) est conçu pour s'utiliser dans une machine à couper les aliments et pour acheminer un liquide de refroidissement d'un réservoir (13) vers au moins un dispositif de support (26, 27) mis en place pour servir de support à un arbre rotatif (16).
PCT/US2005/035013 2004-10-08 2005-09-30 Ensemble pompe servant a acheminer un liquide de refroidissement WO2006041707A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PL05802471T PL1797321T3 (pl) 2004-10-08 2005-09-30 Zespół pompowy do transportowania płynu chłodzącego
EP05802471.2A EP1797321B1 (fr) 2004-10-08 2005-09-30 Ensemble pompe servant a acheminer un liquide de refroidissement
ES05802471.2T ES2546082T3 (es) 2004-10-08 2005-09-30 Unidad de bomba para transportar un fluido de refrigeración

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US61663104P 2004-10-08 2004-10-08
US60/616,631 2004-10-08
US11/237,859 US7314353B2 (en) 2004-10-08 2005-09-29 Pump assembly for transporting a cooling fluid
US11/237,859 2005-09-29

Publications (2)

Publication Number Publication Date
WO2006041707A2 true WO2006041707A2 (fr) 2006-04-20
WO2006041707A3 WO2006041707A3 (fr) 2007-03-22

Family

ID=36148797

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/035013 WO2006041707A2 (fr) 2004-10-08 2005-09-30 Ensemble pompe servant a acheminer un liquide de refroidissement

Country Status (5)

Country Link
US (1) US7314353B2 (fr)
EP (1) EP1797321B1 (fr)
ES (1) ES2546082T3 (fr)
PL (1) PL1797321T3 (fr)
WO (1) WO2006041707A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011098097A1 (fr) * 2010-02-11 2011-08-18 Husqvarna Ab Outil électrique entraîné par batterie comprenant un moteur sans balai
TWI566684B (zh) * 2014-06-13 2017-01-21 Turbine transmission mechanism for lawn mower
US11592795B2 (en) * 2019-02-08 2023-02-28 Dell Products L.P. System and method of managing liquids with information handling systems

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Publication number Priority date Publication date Assignee Title
US1677978A (en) * 1926-04-06 1928-07-24 George H Messer Oil-supply-controlling apparatus for liquid-fuel burners
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DE3447091A1 (de) 1984-12-22 1986-07-03 Fa. Andreas Stihl, 7050 Waiblingen Oelpumpe
JPS6453073A (en) 1987-08-24 1989-03-01 Akebono Res & Dev Centre Hydraulic pump
US4997344A (en) * 1988-06-15 1991-03-05 Deere & Company Rotor bearing pre-load for a radial piston pump
US5363740A (en) 1993-07-16 1994-11-15 Pneumo Abex Corporation Fluid motor/pump with scavenged case
DE4331910C2 (de) 1993-09-20 1997-05-28 Aisan Ind Hubkolben-Strömungsmittelpumpe
US5618335A (en) 1994-07-13 1997-04-08 Edelbrock Corporation Air oil separator
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Non-Patent Citations (1)

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Title
See references of EP1797321A4 *

Also Published As

Publication number Publication date
ES2546082T3 (es) 2015-09-18
EP1797321A4 (fr) 2012-02-22
PL1797321T3 (pl) 2015-12-31
EP1797321B1 (fr) 2015-07-15
US7314353B2 (en) 2008-01-01
WO2006041707A3 (fr) 2007-03-22
US20060083636A1 (en) 2006-04-20
EP1797321A2 (fr) 2007-06-20

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